Namespace:   "testNS",
			Annotations: map[string]string{},
		},
	}

	testCases := []struct {
		desc         string
		hostNames    []string
		resultSearch []string
		events       []string
	}{
		{
			desc:         "valid: 3 search paths",
			hostNames:    []string{"testNS.svc.TEST", "svc.TEST", "TEST"},
			resultSearch: []string{"testNS.svc.TEST", "svc.TEST", "TEST"},
			events:       []string{},
		},

	// update.
	e.endpointsByServiceAndSlice[hostname][slice] = endpoints
}

func (e *endpointSliceCache) Delete(hostname host.Name, slice string) {
	e.mu.Lock()
	defer e.mu.Unlock()
	e.delete(hostname, slice)
}

func (e *endpointSliceCache) delete(hostname host.Name, slice string) {
	delete(e.endpointsByServiceAndSlice[hostname], slice)
	if len(e.endpointsByServiceAndSlice[hostname]) == 0 {

		},
	)
	legacyregistry.MustRegister(certificateRotationAge)

	getTemplate := func() *x509.CertificateRequest {
		hostnames, ips := addressesToHostnamesAndIPs(getAddresses())
		// don't return a template if we have no addresses to request for
		if len(hostnames) == 0 && len(ips) == 0 {
			return nil
		}
		return &x509.CertificateRequest{
			Subject: pkix.Name{

metadata:
  name: gateway
spec:
  gatewayClassName: istio
  listeners:
  - name: default
    hostname: "*.example.com"
    port: 80
    protocol: HTTP
---
apiVersion: gateway.networking.k8s.io/v1beta1
kind: HTTPRoute
metadata:
  name: http-1
spec:
  parentRefs:
  - name: gateway
  hostnames: ["bar.example.com"]
  rules:
  - backendRefs:
    - name: b
      port: 80
---

	return response
}

func generateAltHosts(hostname string, nameinfo *dnsProto.NameTable_NameInfo, proxyNamespace, proxyDomain string,
	proxyDomainParts []string,
) sets.String {
	out := sets.New[string]()
	if strings.HasSuffix(hostname, ".") {
		return out
	}
	out.Insert(hostname + ".")
	// do not generate alt hostnames if the service is in a different domain (i.e. cluster) than the proxy

metadata:
  creationTimestamp: null
  name: host-mismatch
  namespace: default
spec: null
status:
  parents:
  - conditions:
    - lastTransitionTime: fake
      message: no hostnames matched parent hostname "*.foobar.example"
      reason: NoMatchingListenerHostname
      status: "False"
      type: Accepted
    - lastTransitionTime: fake
      message: All references resolved
      reason: ResolvedRefs

				"Set RESOLVE_HOSTNAME_GATEWAYS on istiod to enable resolving hostnames in the control plane.",
				gw.Addr)
			continue
		}
		hostnameGateways[gw.Addr] = append(hostnameGateways[gw.Addr], gw)
		names.Insert(gw.Addr)
	}

	if !features.ResolveHostnameGateways {
		return resolvedGatewaySet
	}
	// resolve each hostname
	for host, addrs := range mgr.NameCache.Resolve(names) {

			}
		}
	}
	return ""
}

// Hostnames - returns list of unique hostnames
func (l EndpointServerPools) Hostnames() []string {
	foundSet := set.NewStringSet()
	for _, ep := range l {
		for _, endpoint := range ep.Endpoints {
			if foundSet.Contains(endpoint.Hostname()) {
				continue
			}
			foundSet.Add(endpoint.Hostname())
		}
	}
	return foundSet.ToSlice()
}

// can be a wildcard.
func (sc *SidecarScope) ServicesForHostname(hostname host.Name) []*Service {
	if !hostname.IsWildCarded() {
		if svc, f := sc.servicesByHostname[hostname]; f {
			return []*Service{svc}
		}
		return nil
	}
	services := make([]*Service, 0)
	for _, svc := range sc.services {
		if hostname.Matches(svc.Hostname) {

	}
	addService := func(ns string, indexes ...int) {
		var hostnames []string
		for _, i := range indexes {
			hostnames = append(hostnames, fmt.Sprintf("svc%d%s", i, svcSuffix))
		}
		addServiceByNames(ns, hostnames...)
	}

	addServiceInstance := func(hostname host.Name, indexes ...int) {
		for _, i := range indexes {
			s.MemRegistry.AddEndpoint(hostname, "http-main", 2080, "192.168.1.10", i)
		}